A three phase 10kW, 1700rpm, 60Hz, four poles, Y connectedinduction motor has a no-load speed of 1750rpm. The rotationalmechanical losses are constant and equal to 500W. The core lossesare constant and equal to 300W. The copper losses in the statorequal to the copper losses in the rotor at full load. If the rotorresistance per phase is 0.25?, calculate the following:
a.The frequency of the induced current in the rotor circuit at fullload.
b.The percentage speed regulation of the motor.
c.The efficiency of the motor at full load.
d.The power transferred in the air gap at full load.
e.If the starting torque of the motor is five times the full loadtorque, calculate the starting currentin the rotor circuit.
